Code 3
Routine response – standard driving, non-urgent.
Code 4
Situation under control – no further assistance required.
Code 5
Officer in distress – immediate backup required.
Code 6
Request for an ambulance or medical assistance.
Code 7
Request a fire brigade or assistance with a fire.
Code 8
Hazardous material or dangerous goods present.
Code 9
No further action is required at the scene.
Affirmative
Yes or acknowledgment.
Negative
No or denial.
ETA
Estimated time of arrival.